It would be about a witch who lived upon a hill, and two children go play detective around her house, and SHE FINDS THEM.... Anyway, she curses them, it starts raining, they got trapped and live on an island and the storm has destroyed everything (including the boats), so they are stuck high up in their houses with their families.
The children hear their mother scream downstairs and run to the room where she is in, there they see her being smashed against the wall by...actually...nothing....they dont see anything but she got smashed and smashed against the wall and starts to bleed heavily, at the last hit at the wall she breaks her neck.
They go back sit upstairs in the house and the father decides to get some help alone, so he leaves his children and went outside for help.
After 2 weeks he still didn't come back, so the children decide to go outside to get some help, but when they come in the other houses they only find corpses and blood, most bodyparts are missing, probably eaten by the invisible creature.
There is only one house left where they didn't went: the house of the witch, the boy says to his sister that they have to go to the witch and ask her to take back the curse. So on they went, to the witch house, over the river with their boat, but as they came closer to the witch-house the storm also gets heavier, and it turns the boat upside down.
Under water the girl got grabbed by tentacles, but she had to reach the door, with all her strength she tries to release herself from the tentacle and tries to grab the door but the creature pulls her back now and she looked at it: green, and so many tentacled, like a gigantic octopus, but much more fearful... Then suddenly her brother stabs the tentacle with his knife and releases his sister, they swim up to where the window is and climb in the house.
But inside they see the door already moving and two gigantic shadows, black cloaked, like Watchers come in and grab the two and bring them to the witch, who is standing in front of a gigantic pit.
At the end the children will be sacrificed to Kutulu in the Pit, the girl first, after she is been ****ed by the creature, it will eat her alive, and the brother is ripped apart by the creature.
-end-